阅读说明：本技术 一种旋风除尘方法 (Cyclone dust removal method ) 是由 陈立德 于 2020-05-12 设计创作，主要内容包括：本发明公开了一种旋风除尘方法,它包括采用以切线方向进气,通过将进气在离心分离圆筒中旋转产生离心力分离进气中的固体尘埃颗粒以及在离心分离圆筒中央设置排气管排放通过离心分离后的空气的方法,其特征是将进气在离心分离圆筒中旋转产生离心力分离进气中的固体尘埃颗粒后让离心分离后的固体尘埃颗粒进入到一个空气处于相对静止的空间的方式来消除固体尘埃颗粒向离心分离圆筒中央排气管方向产生的浮力,从而使固体尘埃颗粒在空气处于相对静止的空间中集聚下沉而进入到该与空气处于相对静止的空间相通的集尘空间中以排放集聚的固体尘埃颗粒,使固体尘埃颗粒从空气中分离。本发明能够有效地将固体颗粒从空气中分离,分离效果好,分离过程中不易堵塞分离设备,并能变化设计出更多功能效果的除尘分离设备。(The invention discloses a cyclone dust removing method, which comprises a method of adopting tangential air intake, generating centrifugal force to separate solid dust particles in the air intake by rotating the air intake in a centrifugal separation cylinder, arranging an exhaust pipe in the center of the centrifugal separation cylinder to discharge the air after centrifugal separation, the method is characterized in that the air inlet is rotated in a centrifugal separation cylinder to generate centrifugal force to separate solid dust particles in the air inlet, then the solid dust particles after centrifugal separation enter a space with air in relative rest to eliminate the buoyancy generated by the solid dust particles to the central exhaust pipe of the centrifugal separation cylinder, so that the solid dust particles are gathered and sunk in the relatively static space of the air and enter the dust collecting space communicated with the relatively static space of the air to discharge the gathered solid dust particles, and the solid dust particles are separated from the air. The invention can effectively separate solid particles from air, has good separation effect, is not easy to block separation equipment in the separation process, and can change and design dust removal separation equipment with more multifunctional effect.)

1. A cyclone dust-removing method includes such steps as providing a cyclone dust-removing cylinder, introducing air in tangential direction, centrifugal separating the solid dust particles in the air, and exhausting the air, the method is characterized in that the air inlet is rotated in a centrifugal separation cylinder to generate centrifugal force to separate solid dust particles in the air inlet, then the solid dust particles after centrifugal separation enter a space with air in relative rest to eliminate the buoyancy generated by the solid dust particles to the central exhaust pipe of the centrifugal separation cylinder, so that the solid dust particles are gathered and sunk in the relatively static space of the air and enter the dust collecting space communicated with the relatively static space of the air to discharge the gathered solid dust particles, and the solid dust particles are separated from the air.

2. A cyclone dust collecting method according to claim 1, wherein said step of allowing the centrifugally separated dust particles to enter a space where air is relatively stationary is a step of providing a dust particle outlet passage in a wall of the centrifugal separation cylinder, the other end of the dust particle outlet passage being provided with a space where air is relatively stationary so that the centrifugally separated solid dust particles enter the space where air is relatively stationary by a centrifugal force, the space where air is relatively stationary being a space which is spaced apart from the centrifugal separation cylinder and which communicates with the centrifugal separation cylinder through the dust particle outlet passage.

3. A cyclone dust collecting method according to claim 2, wherein said dust particle outlet passage is a slot formed in the wall of the centrifugal separation cylinder.

4. A cyclone dust collecting method as claimed in claim 2, wherein the space in which the air is relatively static is an interlayer formed by providing a housing outside the centrifugal separation cylinder and communicating with the dust collecting space.

5. A cyclone dust collecting method according to claim 2, wherein the space in which the air is relatively stationary is a pipe connected to a dust particle outlet passage provided in the wall of the centrifugal separation cylinder and communicating with the dust collecting space.

Technical Field

The invention relates to a dust removal technology, in particular to a high-efficiency cyclone dust removal method.

Background

In the air purification treatment, the dust removal treatment is often needed, the particle dust in the air is removed, the cyclone separation is also often used in the treatment of the working environment, Chinese patent 201620750712.X discloses a cyclone separation dust removal device, a cyclone cylinder is provided with a dust-containing gas inlet, the upper end of the cyclone cylinder is provided with an inner filter pipe, a cover body is arranged above the inner filter pipe, the cover body is fixed with the inner filter pipe, a gas outlet is arranged below the cover body, a dust guide plate is arranged inside the cyclone cylinder, the inner filter pipe plays a role of filtering the gas, the guided gas is prevented from containing dust particles, the dust guide plate can convey the dust to a blanking hopper, during the work, the air containing the dust particles firstly enters the cyclone cylinder tangentially for cyclone separation, the dust particles which are not separated in the air are further filtered by the filter pipe when the air passes through the filter pipe, the dust particles are removed, and the separation dust particles are removed by the cyclone separation dust removal device, the ventilation hole on the filter pipe must be less than the dust particle diameter, just can filter the dust particle to lead to often can be stopped up by the dust particle and influence cyclone separation at the filter pipe in-process that removes dust, also often need dismantle the filter pipe simultaneously and wash, brought very big inconvenience and influence for continuous dust removal work. In addition, when some high-temperature hot gas containing dust particles is used for dust removal (such as high-temperature flue gas dust removal), the service life of dust removal equipment can be influenced because the high-temperature flue gas is limited in temperature tolerance when the high-temperature flue gas is used as a cyclone dust removal metal material.

Disclosure of Invention

The invention aims to solve the technical defects and provide a cyclone dust removal method which is simple in structure, good in dust removal effect and capable of continuously working.

In order to achieve the above object, the present invention provides a cyclone dust removing method, which comprises the steps of introducing air in a tangential direction, separating solid dust particles in the introduced air by generating centrifugal force by rotating the introduced air in a centrifugal separation cylinder, and discharging the air after centrifugal separation by arranging an exhaust pipe at the center of the centrifugal separation cylinder, wherein the solid dust particles in the introduced air are separated by generating centrifugal force by rotating the introduced air in the centrifugal separation cylinder, and then the solid dust particles after centrifugal separation are introduced into a space where the air is relatively static to eliminate buoyancy generated in the direction of the exhaust pipe at the center of the centrifugal separation cylinder, so that the solid dust particles are gathered and sunk in the space where the air is relatively static to enter a dust collecting space communicated with the space where the air is relatively static to discharge the gathered solid dust particles, the solid dust particles are separated from the air.

In order to further implement the cyclone dust removing method, the step of enabling the centrifugally separated dust particles to enter a space with relatively static air is to arrange a dust particle outlet channel on the wall of the centrifugal separation cylinder, and arrange a space with relatively static air at the other end of the dust particle outlet channel, so that the centrifugally separated solid dust particles enter the space with relatively static air under the action of centrifugal force, wherein the space with relatively static air is a space which is separated from the centrifugal separation cylinder and is communicated with the centrifugal separation cylinder through the dust particle outlet channel. Here, the space in which the air is relatively stationary is a space in which the air is present in the cylinder and is rotating at a high speed, and is not absolutely stationary.

The dust particle outlet channel is a slotted hole formed in the wall of the centrifugal separation cylinder.

The space where the air is relatively static is a sandwich layer formed by arranging a shell outside the centrifugal separation cylinder and communicated with the dust collection space.

The space where the air is relatively static is a pipeline which is connected with a dust particle outlet channel arranged on the wall of the centrifugal separation cylinder and is communicated with the dust collection space.

The separation effect of solid dust particles in cyclone dust removal is mainly related to centrifugal force and buoyancy of air to the particles, when gas performs high-speed circular motion, the centrifugal force of small particles is F = M omega 2R, M is the mass of the small particles, omega is a rotation angular velocity, and R is a cylinder radius, because the solid is about 1000 times of the gas density, the difference between the centrifugal force of the particles and the centrifugal force of the gas is enlarged by thousands of times or even hundreds of thousands of times by high-speed rotating airflow, and the larger the centrifugal force difference is when the rotating speed is higher, the outward direction of the force is the direction of a barrel wall; however, because the small particles have large specific surface area, the air is subjected to large buoyancy, the air moves towards the air outlet at the center while making circular motion, the buoyancy of the air to the small particles is inward, the directions of the two are opposite, the buoyancy = wind pressure and the force area of the particles = wp and S = 0.5. ro. v. S, wherein ro is the air density, v is the flow velocity of the air towards the center, and S is the force area of the particles. Assuming that the particles are cubes, S is a single surface, obviously, the particles are finer, the specific surface area is larger, the mass is smaller, the centrifugal force is smaller, the buoyancy of wind to the particles is larger, and the separation is more unfavorable.

The invention provides a cyclone dust removing method, which eliminates the buoyancy generated by solid dust particles to the direction of a central exhaust pipe of a centrifugal separation cylinder by enabling the solid dust particles after centrifugal separation to enter a space with relatively static air, thereby enabling the solid dust particles to be gathered and sunk in the space with relatively static air and enter a dust collecting space communicated with the space with relatively static air to discharge the gathered solid dust particles and separating the solid dust particles from the air. Traditional cyclone removes dust because the bucket wall can't be done very smoothly, very round, and the air of doing the circular motion will cause the "spring" of granule, just like the dust on ground can be blown up by the wind, is difficult to gather into the large granule, and the solid dust particle that gets into the air and be in relatively static space just can collide each other under the particle concentration of relative high density and form the large granule and subside, realizes the purpose of high-efficient separation solid dust particle.

The cyclone dust removal method can more effectively separate solid particles from air, has good separation effect, is not easy to block separation equipment in the separation process, ensures the continuity of work, is easier to gather the solid particles after centrifugal separation into large particles for sedimentation, and is convenient for controlling the centralized treatment of the solid particles; in addition, according to the cyclone dust removal method provided by the invention, the dust removal separation equipment with more multifunctional effect can be designed in a variable way, for example, the problem of high-temperature air temperature reduction, heat exchange and dust removal is solved, so that the hot air subjected to preliminary temperature reduction and dust removal can smoothly carry out secondary heat exchange, and the problem that a heat exchanger is most afraid of dust blockage is solved.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of embodiment 2 of the present invention;

FIG. 3 is a schematic view of a strip seam structure on the wall of the inner cylinder;

FIG. 4 is a schematic view of a structure of through holes formed in the wall of the inner cylinder;

FIG. 5 is a schematic structural diagram of an embodiment provided with a cooling interlayer;

FIG. 6 is a schematic view of a structure in which a connection between the dust particle guiding pipe and the inner cylinder forms an inclined angle downward.

Wherein: the dust collection device comprises an air inlet channel 1, an air outlet 2, an inner cylinder 3, an exhaust pipe 4, an interlayer 5, an air outlet 6, an inner cylinder barrel bottom 7, a dust collection barrel body 8, an ash discharge valve baffle plate 9, an ash discharge valve 10, an ash outlet 11, a conical dust collection barrel 12, a cooling air inlet 13, a dust particle outlet 14, a flow guide baffle plate 15, a cooling air outlet 16, a dust particle guide pipeline 17, a dust particle guide outlet 18, a purified air outlet 19, a shell 20 and an included angle 21.

Detailed Description

The present invention will be described in further detail below by way of examples with reference to the accompanying drawings.